Why would a line captain allow the RQFO to do the takeoff or landing on these pairings?
There are plenty of regional sectors on all fleets where the FO can achieve recency requirements. If necessary they can fly with a training captain on these long haul pairings to build their "experience"?
A line captain is there to ensure safe and efficient operations in the airline, not facilitate the training/experience/maintenance of the RQFO recency.
Let management manage recency.